Joint evolution of predator body size and prey-size preference
Joint evolution of predator body size and prey-size preference
复制标题
捕食者身体尺寸和猎物尺寸偏好的联合进化
DOI：
10.1007/s10682-007-9209-1
复制
发表时间：
2008
影响因子：
1.9
通讯作者：
U. Dieckmann
中科院分区：
文献类型：
--
作者：
T. Troost;B. Kooi;U. Dieckmann
基于动态能量收支理论，研究了捕食者体型和猎物体型偏好的联合进化。捕食者的人口统计学和它们的功能反应是基于一般的生态生理学原理，包括捕食者和猎物的大小。虽然我们的模型可以通过调整参数值来解释定性不同的捕食者类型，但我们主要关注的是杀死猎物的“真正”捕食者。由此产生的模型解释了各种经验观察，如捕食者-猎物大小组合的三角形分布，岛屿规则，以及滤食动物和猛禽之间捕食者-猎物大小比的差异。该模型还揭示了捕食者-猎物大小比演化的关键因素。捕获机制原来有很大的影响，这个比例，而猎物的大小可用性和资源的竞争只有助于解释捕食者的大小变化，而不是捕食者-猎物的大小比例的变化。捕食者之间的捕食被认为是偏离最优捕食者-猎物大小比的一个重要因素。
We studied the joint evolution of predator body size and prey-size preference based on dynamic energy budget theory. The predators’ demography and their functional response are based on general eco-physiological principles involving the size of both predator and prey. While our model can account for qualitatively different predator types by adjusting parameter values, we mainly focused on ‘true’ predators that kill their prey. The resulting model explains various empirical observations, such as the triangular distribution of predator–prey size combinations, the island rule, and the difference in predator–prey size ratios between filter feeders and raptorial feeders. The model also reveals key factors for the evolution of predator–prey size ratios. Capture mechanisms turned out to have a large effect on this ratio, while prey-size availability and competition for resources only help explain variation in predator size, not variation in predator–prey size ratio. Predation among predators is identified as an important factor for deviations from the optimal predator–prey size ratio.